1. Easy to buy, or just use cockroach power, this can be purchased in most countries on the planet.2. By adding a poison, it tells the locals that it should kill the insects that enter.3. While the mosquitoes are trapped inside, the boric acid poisons them.

Why added water?

1. When the mosquito is near the water it will be poisoned.2. Distributes the toxic boric acid around, and layers the bottle inside. 2. You can shake the bottle and drown, or kills the mosquitoes with the toxic boric acid.

Why this bottle?

1. The bigger the bottle, the less you need to change.2. There is instant feedback, you can see the dead mosquitoes.3. This can be used inside or outside, it is not a problem to be in the rain.